There were no TCs generated in July 2020 over the western North Pacific (WNP), which was first time this had happened during since 1980. This study attempts to understand cause of there having been 2020, and evaluates prediction skill for large-scale environmental conditions associated with TC genesis number (TCGN). Results show that main causes abnormal warming sea surface temperature (SST) In...

The propagation of electromagnetic waves beyond the line sight can be caused by atmospheric ducts, which are significant concerns in fields radar and communication. This paper utilizes data from seven automatic weather stations five radio-sounding to statistically analyze characteristics ducts northwest region South China Sea (SCS). After verifying practicality numerical analysis NCEP CFSv2 ECM...

The purpose of the present study is to assess large-scale signal modulation produced by two dynamically downscaled Seasonal Forecasting Systems (SFSs) and investigate if additional predictive skill can be achieved, compared driving global-scale Climate Forecast System (CFS). SFSs are evaluated in terms physical values anomaly interannual variability. Downscaled consist two-step dynamical ensemb...

This work sought to analyze in high resolution the downscaling of global model Climate Forecast System Version 2 (CFSv2) by using regional climate RegCM-4.9. The precipitation fields were generated two different domains and spatial with 10 km 3 km, for August October 2020. equatorial region Northeast Brazil can be characterized complex dynamics that encompass atmospheric movements such as exist...

Abstract Skillful subseasonal prediction of extreme heat and precipitation greatly benefits multiple sectors, including water management, public health, agriculture, in mitigating the impact events. A statistical model is developed to predict weekly frequency warm days 14-day standardized index (SPI) during boreal summer United States (US). We use a leading principal component US soil moisture ...